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Repairs 7 days a week · Within 24 hours

Boiler breakdowns and repairs in Brussels, 7 days a week

No heating, no hot water, boiler locked out? Call us, we answer 24/7. Our certified technicians repair Vaillant, Bulex, Bosch, Buderus, Junkers, Viessmann and Chaffoteaux boilers and come to you within 24 hours, 7 days a week. You know the price before any repair.

Technician diagnosing a broken-down boiler with a multimeter
Travel + diagnosis + 1st hour

€149 VAT incl.

Travel + diagnosis + 1st hour

Call-out, 7 days a week

Within 24 hours

Call-out, 7 days a week

We answer for emergencies

24/7

We answer for emergencies

Parts and work

2-year guarantee

Parts and work

Diagnosis

The boiler faults we repair

We always start by finding the cause. Then you know the price of the repair, before we do it.

  1. 01

    No heating

    Cold radiators while the boiler seems to be running: the pump, the diverter valve, the thermostat or the circuit board may be to blame.

  2. 02

    No hot water

    The heating works but the water stays cold at the tap: often the domestic hot water exchanger, the diverter valve or a flow sensor.

  3. 03

    Pressure dropping

    Needle below 1 bar, frequent top-ups: there's probably a leak on the circuit or an expansion vessel that needs re-pressurising.

  4. 04

    Boiler locked out or error code

    Red light or a code on the display: note it down with your boiler's brand, it helps us prepare the visit.

  5. 05

    Unusual noises

    Banging, whistling or gurgling: air in the circuit, limescale in the heat exchanger or a tired pump.

  6. 06

    Leak under the boiler

    Dripping or a puddle: a faulty safety valve, fitting or seal. Turn off the water supply if the leak is significant.

  7. 07

    Ignition failing

    The flame or pilot light goes out after a few seconds: the electrode, gas supply, fan or flue need checking.

  8. 08

    Poor combustion

    A yellow flame, soot marks or a burning smell: switch the boiler off and have the combustion checked straight away.

Safety

Smell gas? Do these things, in this order

Open doors and windows. No flames or sparks: do not touch any switch, do not turn on a light, do not use any electrical appliance or phone inside the home.

If you can reach the gas meter valve without turning on a light, close it. Then leave the home and call from outside.

Free gas emergency numbers: Brussels (Sibelga) 0800 19 400 · Flemish Brabant (Fluvius) 0800 65 0 65 · Walloon Brabant (ORES) 0800 87 087 · or 112.

Once the situation is safe, contact us to check your system and put it back into service.

Repairs · 24/7

A breakdown? We answer 24/7.

Tell us what is happening: we tell you straight away whether it can wait, and a technician comes within 24 hours, weekends included.

Would you rather we called you? Request a callback

Radialec technician with a tablet

Making the right choice

Before you call: 3 quick checks

The pressure. On the gauge, the needle is usually between 1 and 2 bar when cold. Below that, simply topping up may be enough: follow your boiler's manual.

The thermostat. Flat batteries, the wrong programme or a set temperature that's too low: it's a more common cause of “breakdown” than you'd think.

The power supply. Check that the boiler's breaker hasn't tripped. If it's locked out, you can try resetting it; if the fault comes back, don't keep trying and call us.

Your project, step by step

How a boiler repair works

  1. 01

    You call

    Tell us about the fault: what's stopped working, the code shown, the boiler's brand. We set a visit within 24 hours, 7 days a week.

  2. 02

    The technician finds the fault

    They look for the exact cause: pump, valve, ignition, circuit board… Travel, diagnosis and first hour: €149 VAT incl.

  3. 03

    You approve the price

    If a part needs replacing, you know its price before we start. You decide.

  4. 04

    The boiler starts again

    Pressure and safety devices checked, then a few tips so the fault doesn't come back.

Our prices

Boiler repair price in Brussels

Travel, diagnosis and the first hour have a fixed price: you know it before the technician even rings the bell.

Prices include VAT. If a part needs replacing, we give you its price and wait for your agreement before repairing.

  • Boiler repairTravel + diagnosis + 1st hour€149VAT incl.
  • Boiler replacementIf the repair is no longer worth it, free quoteOn quote

Brands we install

The brands we repair

Vaillant, Bulex, Bosch, Buderus, Junkers, Viessmann and Chaffoteaux: our technicians repair gas and oil boilers from these brands.

Our customers

What our customers say.

Reviews shown word for word, in their original language (French).

5.0

More than 30 Google reviews

Read all reviews
  • Rating: 5 out of 5

    Intervention très rapide un vendredi soir et un jour férié pour une fuite urgente sur notre chaudière. Le technicien a identifié le problème et est revenu le lendemain pour remplacer la pièce et tout remettre en service. Service efficace et réactif dans une situation d'urgence.

    Eva M.Google review · September 2026
  • Rating: 5 out of 5

    Chauffagiste très professionnel. Il a rapidement identifié le problème sur notre chaudière et l’a réparé.

    Lorenzo M.Google review · September 2026
  • Rating: 5 out of 5

    Super satisfait. Je n’avais plus d’eau chaude ; le problème a été rapidement identifié et résolu. Prix correct, travail professionnel. Je ne peux que recommander Houdaifa !

    Paul B.Google review · August 2026

Technicians certified in all three regions

  • Detailed quote within 24 hours
  • Work to Belgian standards (EPB, RGIE)
  • One number for heating, electrics and plumbing
  • Brussels Environment
  • VEKA – Flemish Energy and Climate Agency
  • Wallonia Environment

Frequently asked questions

Frequently asked questions about boiler repairs

Can't find your question? Ask it on WhatsApp, with a photo if that helps, or leave your number and we'll call you back.

A repair call-out is charged at €149 VAT incl., including travel, diagnosis and the first hour of work. Beyond the first hour, each extra hour is charged at €65 VAT incl.. If a part needs replacing, we tell you its price before the repair.

Where we work

Brussels and the surrounding area

Boiler repairs within 24 hours in the 19 Brussels municipalities and the surrounding area, in Flemish Brabant and Walloon Brabant.

Brussels-Capital Region

  • Anderlecht
  • Auderghem
  • Berchem-Sainte-Agathe
  • City of Brussels
  • Etterbeek
  • Evere
  • Forest
  • Ganshoren
  • Ixelles
  • Jette
  • Koekelberg
  • Molenbeek-Saint-Jean
  • Saint-Gilles
  • Saint-Josse-ten-Noode
  • Schaerbeek
  • Uccle
  • Watermael-Boitsfort
  • Woluwe-Saint-Lambert
  • Woluwe-Saint-Pierre

Flemish Region

  • Sint-Genesius-Rode
  • Wezembeek-Oppem
  • Kraainem
  • Linkebeek
  • Drogenbos
  • Tervuren
  • Overijse
  • Hoeilaart
  • Meise
  • Grimbergen
  • Keerbergen
  • Tremelo
  • Oud-Heverlee

Walloon Region

  • Lasne
  • Waterloo
  • La Hulpe
  • Rixensart
  • Braine-l'Alleud
  • Chaumont-Gistoux
  • Grez-Doiceau
  • Beauvechain
  • Incourt

Fast repairs

Boiler broken down? Your technician is (almost) on the way.

Describe the fault on the phone: a technician comes within 24 hours, 7 days a week, in Brussels and nearby, and gives you the price before repairing.

No time right now? Request a callback

Radialec technician on the way with a toolbox
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